Step 5 - Connect Piping; Install Water Piping To Heat - Carrier AquaEdge 19XRV Installation Instructions Manual

Step 5 — Connect Piping
INSTALL WATER PIPING TO HEAT EXCHANG-
ERS — Refer to Table 9 for nozzle sizes. Install piping using
job data, piping drawings, and procedures outlined below. A
typical piping installation is shown in Fig. 26.
CAUTION
Factory-supplied insulation is not flammable but can be
damaged by welding sparks and open flame. Protect insu-
lation with a wet canvas cover.
CAUTION
To prevent damage to sensors, remove chilled and con-
denser water temperature sensors before welding connect-
ing piping to water nozzles. Refer to Fig. 10. Replace
sensors after welding is complete.
CAUTION
When flushing the water systems, isolate chiller from water
circuits to prevent damage to the heat exchanger tubes.
1. Offset pipe flanges to permit removal of waterbox cover
for maintenance and to provide clearance for pipe
cleaning. No flanges are necessary with marine waterbox
option; however, water piping should not cross in front of
the waterbox or access will be blocked.
2. Provide openings in water piping for required pressure
gages and thermometers. For thorough mixing and tem-
perature stabilization, wells in the leaving water pipe
should extend inside pipe at least 2 in. (50 mm).
3. Install air vents at all high points in piping to remove air
and prevent water hammer.
4. Field-installed piping must be arranged and supported to
avoid stress on the equipment and transmission of vibra-
tion from the equipment as well as to prevent interference
with routine access for the reading, adjusting, and servic-
ing of the equipment. Provisions should be made
for adjusting the piping in each plane and for periodic and
major servicing of the equipment.
5. Water flow direction must be as specified in Fig. 26-30.
NOTE: Entering water is always the lower of the 2 noz-
zles. Leaving water is always the upper nozzle for cooler
or condenser.
6. Install waterbox vent and drain piping in accordance with
individual job data. All connections are
7. Install waterbox drain plugs in the unused waterbox
drains and vent openings.
8. Install optional pumpout system or pumpout system and
storage tank as shown in Fig. 31-34.
9. Isolation valves are recommended on the cooler and con-
denser piping to each chiller for service.
10. Apply appropriate torque on the retaining bolts in a criss-
cross pattern for the water box covers before insulating
the water box cover. The gasket can relax during trans-
portation and storage and the water box cover requires re-
tightening of the bolts.
ISOLATION VALVES
a19-2067
Fig. 26 — Typical Nozzle Piping
43
3 / -in. FPT.
4
FLANGES
FLANGES FOR WATERBOX CLEANING
THERMOMETERS
ISOLATION VALVES